“We think that a tick database should be a commodity item by now that is essentially the same in every firm across the industry, yet there are few compelling solutions available where you don’t have to go through the hassle of hosting and back-populating a multi-terabyte time-series database. Polygon is the solution to this problem. We have worked with them in the past on a transaction cost analysis tool, and our experience was great. They provided exactly what we wanted: full historical US equities trade and quote data via a great API for $399/mo with no commitment. Polygon is a dream come true when compared to some of the largest players in the market. They provide excellent quality data through a modern API with no long term contract."